Determining the Concentration of an Unknown Solution Graph: The effect of concentration of CuS04 * 5H20 on transmittance. I solved for my unknown by plugging in “y” as my given transmittance value‚ which was 85.0. y = -278x + 100.12 .85 = -278x + 100.12 -99.27 = -278x X = .357M (concentration) The relationship between the transmittance values and the concentration is an indirect relationship. Whenever the concentration increases‚ the transmittance decreases. It can also be reversed
Premium Analytic geometry Derivative Variable
Title of the Experiment: determination of densities Introduction The density of a sample of matter represents the mass contained within a unit volume of space in the sample. For most samples‚ a unit volume means 1.0 ml. The units of density‚ therefore‚ are quoted in terms of grams per milliliter (g/ml) or grams per cubic centimeter (g/cm3) for most solid and liquid samples of matter. Density is often used as a point of identification in the determination of an unknown substance. The density
Premium Density Volume Temperature
Menbere Wendimu Che101 Laboratory Report Acid Base Laboratory Objective: Introduction: Experimental: 2.04 g of KHP‚ 100ml volumetric flask‚ distilled H2O‚ approximately 0.1 M of NaOH‚ Vinegar‚ Phenolphthalein‚ 250ml Erlenmeyer flask‚ weighing balance‚ Graduating Cylinder‚ burette and pH meter were used in our experiment. In our first part of our experiment to prepare a primary standard‚ 0.1 M solution of KHP‚ we carefully weighed out 2.04g of KHP in a weigh paper using the weighing balance
Premium Acid dissociation constant Acetic acid Titration
Discussion: The experiment lacked a proper control - While the experiment could not answer the research question‚ this does not disprove the possibility for the choice of bread to affect blood glucose levels; the obtained results were simply not sufficient to prove a connection. This might be due to several reasons‚ but as the experiment lacked a control subject which the other values could have been compared to‚ the results are completely unusable. However‚ there is no consistency in the results
Premium Scientific method Psychology Research
Research documents the positive influence HL has in maintaining and promoting health and preventing disease/illness. Information garnered over the last ten years supports the hypothesis that HL plays a major role in a person’s ability to retrieve‚ decipher‚ and make appropriate use of health care information. Studies prove that certain groups in the population are more likely to have lower levels of HL. These groups include individuals not of Caucasian descent‚ minorities‚ elderly persons‚ people
Premium
Infrared Spectroscopy Aim: To obtain IR spectra of know solid sample and liquid sample using the following sample preparing technique: Prepare solid IR sample using Solid Pellet Samplin Technique Use IR is used to identify functional groups. 5 major functional groups easily identified by IR spectroscopy: 1. C=O 2. C–O 3. OH 4. Phenols 5. C–H Instrument details Type of spectrophotometer: Nicolet 380 FT-IR spectroscopy‚ Nicolet Avatar 360 & Thermo Scientific iS10 FT-IR Spectrometer
Premium Infrared spectroscopy Infrared Spectroscopy
c IB DIPLOMA PROGRAMME PROGRAMME DU DIPLÔME DU BI PROGRAMA DEL DIPLOMA DEL BI M05/3/ECONO/HP1/ENG/TZ0/XX/M+ MARKSCHEME May 2005 ECONOMICS Higher Level Paper 1 6 pages -2- M05/3/ECONO/HP1/ENG/TZ0/XX/M+ This markscheme is confidential and for the exclusive use of examiners in this examination session. It is the property of the International Baccalaureate and must not be reproduced or distributed to any other person without the authorization of IBCA. -3- M05/3/ECONO/HP1/ENG/TZ0/XX/M+
Premium Economics Supply and demand Market economy
| The Chemistry of Natural Waters | Chem 111 Sec 104 | | Hyunjung Hwang | 11/6/2012 | TA: Sarah Boehm‚ Group members: Rachel Hoffman‚ Dan Hirt | Introduction Water hardness is a major part of overall water quality that affects many industrial and domestic water users. Water is considered hard when there are high concentrations of the divalent cations Magnesium and Calcium; water hardness is considered as the sum of both the calcium and magnesium concentrations and expressed as
Premium Water Calcium Hard water
DP Physics IA Thermal physics: Specific Heat Capacity of Metals Introduction: In this experiment we are going to measure the specific heat capacity of a unknown metal. To measure the specific heat capacity we will heat up the metal to certain temperature and release the metal in beaker filled with water. By knowing the mass and temperature of water filled in beaker‚ we will be able to calculate the specific capacity of unknown metal by change in temperature of beaker willed
Premium Heat Thermodynamics Specific heat capacity
c N03/201/H(1)Q IB DIPLOMA PROGRAMME PROGRAMME DU DIPLÔME DU BI PROGRAMA DEL DIPLOMA DEL BI ENGLISH B – HIGHER LEVEL – PAPER 1 ANGLAIS B – NIVEAU SUPÉRIEUR – ÉPREUVE 1 INGLÉS B – NIVEL SUPERIOR – PRUEBA 1 Candidate number/Numéro du candidat Número del alumno Thursday 13 November 2003 (morning) Jeudi 13 novembre 2003 (matin) Jueves 13 de noviembre de 2003 (mañana) 1 h 30 m QUESTION AND ANSWER BOOKLET – INSTRUCTIONS TO CANDIDATES Write your candidate number in the box above. Do not open this
Premium Paragraph Word Question